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Accurate Positions of 120 Radio Sources with Declinations Above −45°

Published online by Cambridge University Press:  04 August 2017

A. E. Niell ,
J. L. Fanselow ,
O. J. Sovers ,
J. B. Thomas ,
K. M. Liewer ,
R. N. Treuhaft  and
K. S. Wallace
A. E. Niell
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109
J. L. Fanselow
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109
O. J. Sovers
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109
J. B. Thomas
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109
K. M. Liewer
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109
R. N. Treuhaft
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109
K. S. Wallace
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109

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Development of a catalogue of approximately 100 radio sources having positional accuracy of ~0.005 arcseconds is one goal of the DSN radio reference frame program. This objective is set by the navigation requirements of the Galileo Project for reconstruction of the probe entry angle into the atmosphere of Jupiter. These radio positions are determined by VLBI observations using the antennas of the NASA Deep Space Network on two intercontinental baselines – California-Spain and California-Australia. Since 1978, measurements have been made simultaneously at 2.3 and 8.4 Ghz. Sixteen to twenty-four hours of data on each of the two baselines are usually obtained within a few days of each other, and since mid-1982 these pairs of observations have been made at approximately six week intervals.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 110: VLBI and Compact Radio Sources , 1984 , pp. 363 - 364
Copyright
Copyright © Reidel 1984 

References

Kaplan, G.H.: 1981, U.S.N.O. Circular No. 163.Google Scholar
Ma, C., et al.: 1982, unpublished.Google Scholar